07.09.2026 aktualisiert

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IT Consultant | Frontend Architect / Engineer

Karlsruhe, Deutschland
Weltweit
Karlsruhe, Deutschland
Weltweit

Skills

GitHub ActionsWebdriverJavaScriptCSSDevOpsGitHubPythonAnsibleRequirements EngineeringTypeScriptRxjsGitLabSassWebpackFront EndMocha
  • Requirements engineering
  • Software Engineering
  • Agile Software Development
  • Project Coordination
  • DevOps
  • Pair Programming / Mob Programming
  • Architectural concepts / decisions
  • Developer Experience (DX).
Tech:
React, Typescript, Javascript, RxJS, MUI, Tailwind, i18n, ESlint, PostCSS, Redux, D3.js, Jest, Testing library, Webdriver, Mocha, Webpack, SASS, CSS, HTML, Kubernetes, Docker, Jenkins, Ansible, Python, Lerna, OAuth, GitOps, Gitlab, Github, Azure Pipelines, Vite, Vitest, MUI-X, Orval, Zod, React Hook Form, Tanstack Query, MSW, Playwright

Erfahrung

Berufserfahrung5 - 10 Jahre
Freelancer seit2020

Sprachen

DeutschverhandlungssicherEnglischverhandlungssicherRussischMuttersprache

Projekthistorie

Senior Frontend Architect & Mentor

Krankenversicherung

Versicherungen

>10.000 Mitarbeiter

  • Entwicklung und Auslieferung von Features für eine produktive Plattform im regulierten Umfeld, von der Architekturentscheidung bis zum Release.
  • Konzeption des State-Managements der Anwendung, um wachsende Komplexität abzubilden, ohne die Feature-Auslieferung zu verlangsamen; Einführung moderner React-Patterns (React Hook Form, TanStack Query, Vitest, MSW).
  • Neuaufbau der CI/CD-Pipeline mit feature-basierten Deployments; dadurch geringeres Deployment-Risiko, kürzerer QA-Zyklus und häufigere Releases.
  • Mentoring durch reguläre Vorträge, Pair- und Mob-Programming Sessions, Code-Reviews

IT Consultant / Frontend Architect

Digital agency

Internet und Informationstechnologie

1000-5000 Mitarbeiter

  • Frontend architecture owner and co-product owner for one product line within a large e-commerce platform landscape; developed the architectural vision for the platform and translated it into concrete, documented decisions.
  • Led an international, multidisciplinary team of [8/11] including QA in a SAFe environment, working across Scrum and Kanban and coordinating with architects, security engineers and feature owners.
  • Designed and built a white-label UI kit that allowed several brand platforms to ship consistent interfaces without rebuilding them each time.
  • Built OAuth-based integrations connecting enterprise private cloud services for several e-commerce teams, removing a recurring blocker between development and production, and developed shared libraries adopted across teams to eliminate duplicated and inconsistent implementations.
  • Prioritised non-functional requirements and technical work against feature demand — the recurring negotiation between what the business wants next and what the platform needs to stay viable.
  • Technical Application Manager: responsible for application quality, including the quality gate, with continuous improvement of both.
  • Supported adjacent compliance topics: FOSS licensing, data catalogue and process documentation.

Tech stack / tools: react, typescript, javascript, lerna, prettier, webdriver.io, docker, cloudfoundry, commerce tools, oauth / oidc, uml, github / gitlab, ghcr, whitesource

Senior Frontend Engineer

Software and consultancy (Supply chain)

Sonstiges

5000-10.000 Mitarbeiter

  • Developed and maintained several in-house applications for a supply chain software company, coordinating a team of four and onboarding new engineers.
  • Integrated micro frontends and OAuth authentication; refactored the existing codebase and middleware, extending unit and e2e coverage as the systems grew.
  • Established testing standards and code quality practices that reduced regressions across the product.
  • Managed deployments with Ansible and handled L2/L3 production support on rotation — direct exposure to live systems and real failure modes.

Tech stack: react, typescript, rxjs (react-rfp), styled components (css-in-js), date-fns, material-ui, lerna, eslint, prettier, jest, webdriver.io, testing-library, Jenkins, ansible opsgenie, docker, msal, oauth, python, flask

Frontend Engineer

Digital Agency

Internet und Informationstechnologie

50-250 Mitarbeiter

Responsible for the developing a MVP (production critical application in future). Client: automotive manufacturer.

  1. Work within the scrum team (2 backend/2 frontend developers, product owner, quality engineer).

  2. Tech stack: react, react-redux, material-ui, ag-grid (enterprise), typescript, postcss, webpack, moment, lodash, selenium web driver, tslint, prettier, docker, kubernetes, Jenkins, oidc

Lead Frontend Engineer.

Digital Agency

Internet und Informationstechnologie

50-250 Mitarbeiter

  • Led a major re-architecture of the Redux state management on a production-critical enterprise application, migrating a monolithic, deeply nested store to a normalised structure with measurable performance gains — accumulated shortcuts repaid deliberately once they cost more than they saved.
  • Coordinated an international team of up to [8] frontend engineers plus QA, including client-side developers; advised the client's PO directly on technology and technical risk.
  • Integrated the application with several other production-critical systems across product teams and external suppliers.
  • Introduced automated testing with Jest and proved its value to a sceptical client; optimised webpack builds and introduced feature-branch deployments to increase delivery velocity.

Tech stack: React, typescript, postcss, scss, webpack, d3, redux, moment, material-ui, tslint, prettier, jest, Jenkins, azure pipelines.

Frontend Entwickler

Market research

Marketing, PR und Design

50-250 Mitarbeiter

Developing and maintaining several in-house applications. Agile culture (scrum), pair programming.
 

2 web applications based on Angular 1.x:

Responsible for development, maintenance. Short decision-making, close communication with PO. Was also involved into UI/UX prototyping with Sketch App. Tech stack is very similar angular ui router, scss, d3.js, highcharts, lodash, moment, webpack, customized utility libraries, karma, jasmine and protractor.
 

Koa.JS Applications:

  1. Middleware. Backend for frontend. Stack: Koa router, co, debug, bunyan,

    sockets, moment, lodash.

  2. Export API. Web service for exporting data in several formats (pdf, csv, xls).

    Stack: phantom.js, libxl, co, lodash, Koa router.

React App:

Responsible for development, maintenance. Short decision-making, close communication with PO. Tech stack: Typescript, react, redux, react-router, scss, postcss, rx.js, redux-observable, redux-thunk, material-ui, react-dropzone, redux-form, pm2, webpack.

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